Microstructure and electrical properties of ZrO2-doped ZnO varistor ceramics
The microstructure and electrical properties of ZnO varistor ceramics with different ZrO2 content prepared by a solid reaction route and sintered at 1100℃ were investigated.The microstructures of the varistor ceramics samples were characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM),at the same time,the electrical properties and current-voltage (V-Ⅰ)characteristics of the varistor ceramics samples were investigated by a DC parameter instrument for varistors.The microstructure of the prepared samples showed a decrease in grain size of ZnO phase with the ZrO2 content increasing.ZrO2-doped ZnO varistor ceramics exhibit comparatively vastly superior comprehensive electrical properties with addition of 0.50 mol% ZrO2,such as the threshold voltage was 350 V / mm,the nonlinear coefficient was 25.4 and the leakage current was 2.96 μA.
varistors zinc oxide zirconia electrical properties microstructure
Yang Yongtao Cui Fengdan Jiao Lei Xu Hongxing Liu Yuanling Yu Renhong Cheng Xiaonong Xu Dong
School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China; Key Laborat School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China; Changzhou M
国际会议
上海
英文
239-239
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）